"A Knowledge skill related to the sciences"?
Where's the humanities love? Especially considering that most of Lovecraft's doctors have a Ph.D. in History, or Archaeology, or Some Language You've Never Heard Of.
I think playing a philosophy professor in a CoC game would be a blast, and I'd take something like this.
"Yes, of course, but there's no way Yog-Sothoth can be the Way, the Gate, and the Key. It's a conflict of ontological categories! Now just leave me with this book so I can look it over, it's not like there could possibly be anything dangerous in something so transparently false..."